Another vote in for Princess Bride. It's just that classic that sticks, though several others are long-worn favorites, too. The one I feel a bit guilty about is Pan's, because I haven't seen it, and don't plan on it. Makes me feel bad for being an uninformed voter. I get that it's amazing, and when it first was advertised I couldn't wait to see it. Fortunately, I heard about the graphic violence--more specifically the type of graphic violence--before I managed to get to a theater.
I am not a wimp, and I love blow-'em'ups, dramas, experimental film, etc. But, I cannot take certain kinds of violence. Not just because it makes me uncomfortable, but because it literally means no sleep for me for weeks. Zombies eating brains is fine, Gladiator and Braveheart are amazing, but most of Sigler's violence in Earthcore (for example) is just out for me. Which makes me sad in some ways, because I've heard other things about Pan that I believe I'd like.